forked from extern/nushell
73 lines
2.6 KiB
Rust
73 lines
2.6 KiB
Rust
use crate::object::base::OF64;
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use crate::object::{Primitive, SpannedDictBuilder, Value};
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use crate::prelude::*;
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fn convert_yaml_value_to_nu_value(v: &serde_yaml::Value, span: impl Into<Span>) -> Spanned<Value> {
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let span = span.into();
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match v {
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serde_yaml::Value::Bool(b) => Value::Primitive(Primitive::Boolean(*b)).spanned(span),
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serde_yaml::Value::Number(n) if n.is_i64() => {
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Value::Primitive(Primitive::Int(n.as_i64().unwrap())).spanned(span)
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}
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serde_yaml::Value::Number(n) if n.is_f64() => {
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Value::Primitive(Primitive::Float(OF64::from(n.as_f64().unwrap()))).spanned(span)
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}
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serde_yaml::Value::String(s) => Value::string(s).spanned(span),
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serde_yaml::Value::Sequence(a) => Value::List(
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a.iter()
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.map(|x| convert_yaml_value_to_nu_value(x, span))
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.collect(),
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)
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.spanned(span),
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serde_yaml::Value::Mapping(t) => {
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let mut collected = SpannedDictBuilder::new(span);
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for (k, v) in t.iter() {
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match k {
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serde_yaml::Value::String(k) => {
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collected
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.insert_spanned(k.clone(), convert_yaml_value_to_nu_value(v, span));
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}
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_ => unimplemented!("Unknown key type"),
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}
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}
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collected.into_spanned_value()
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}
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serde_yaml::Value::Null => Value::Primitive(Primitive::Nothing).spanned(span),
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x => unimplemented!("Unsupported yaml case: {:?}", x),
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}
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}
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pub fn from_yaml_string_to_value(
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s: String,
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span: impl Into<Span>,
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) -> serde_yaml::Result<Spanned<Value>> {
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let v: serde_yaml::Value = serde_yaml::from_str(&s)?;
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Ok(convert_yaml_value_to_nu_value(&v, span))
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}
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pub fn from_yaml(args: CommandArgs) -> Result<OutputStream, ShellError> {
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let out = args.input;
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let span = args.name_span;
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Ok(out
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.values
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.map(move |a| match a.item {
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Value::Primitive(Primitive::String(s)) => match from_yaml_string_to_value(s, span) {
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Ok(x) => ReturnSuccess::value(x.spanned(a.span)),
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Err(_) => Err(ShellError::maybe_labeled_error(
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"Could not parse as YAML",
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"piped data failed YAML parse",
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span,
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)),
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},
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_ => Err(ShellError::maybe_labeled_error(
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"Expected string values from pipeline",
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"expects strings from pipeline",
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span,
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)),
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})
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.to_output_stream())
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}
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